Part 2
In an experiment to measure the internal resistance of a cell by a potentiometer, it is found that the balance point is at a length of 2 m, when the cell is shunted by a 5 Ω resistance; and is at a length of 3 m, when the cell is shunted by a 10 Ω resistance. The internal resistance of the cell is, then
01
Dec
In an experiment to measure the internal resistance of a cell by a potentiometer, it is found that the balance point is at a length of 2 m, when the cell is shunted by a 5 Ω resistance; and is at a length of 3 m, when the cell is shunted by a 10 Ω [...]
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In an experiment to measure the internal resistance of a cell by a potentiometer ,
it is found that the balance point is at a length of 2 m ,
then ,
when the cell is shunted by a 10 Ω resistance. The internal resistance of the cell is ,
when the cell is shunted by a 5 Ω resistance; and is at a length of 3 m ,
A potentiometer wire of length L and resistance 10Ω is connected in series with a battery of emf 2.5V and a resistance in its primary circuit. The null point corresponding to a cell of a emf 1V is obtained at a distance L/2. If the resistance in the primary circuit is doubled then the position of new null point will be.
01
Dec
A potentiometer wire of length L and resistance 10Ω is connected in series with a battery of emf 2.5V and a resistance in its primary circuit. The null point corresponding to a cell of a emf 1V is obtained at a distance L/2. If the resistance in the primary circuit is doubled then the position [...]
A 2 volt battery, a 15Ω resistor and a potentiometer of 100cm length, all are connected in series. If the resistance resistance of potentiometer wire is 5Ω, then the potential gradient of the potentiometer wire is
01
Dec
A 2 volt battery, a 15Ω resistor and a potentiometer of 100cm length, all are connected in series. If the resistance resistance of potentiometer wire is 5Ω, then the potential gradient of the potentiometer wire is a 15Ω resistor and a potentiometer of 100cm length A 2 volt battery all are connected in series. If [...]
In a potentiometer of one metre length an unknown emf voltage source is balanced at 60 cm length of potentiometer wire, while a 3v battery is balanced at 45 cm length. Then, the emf of the unknown voltage source is :
01
Dec
In a potentiometer of one metre length an unknown emf voltage source is balanced at 60 cm length of potentiometer wire, while a 3v battery is balanced at 45 cm length. Then, the emf of the unknown voltage source is : In a potentiometer of one metre length an unknown emf voltage source is balanced [...]
In the circuit shown, a meter bridge is in its balanced state. The meter bridge wire has a resistance 0.1 ohm/cm. The value of unknown resistance X and the current drawn from the battery of negligible resistance is
01
Dec
In the circuit shown, a meter bridge is in its balanced state. The meter bridge wire has a resistance 0.1 ohm/cm. The value of unknown resistance X and the current drawn from the battery of negligible resistance is a meter bridge is in its balanced state. The meter bridge wire has a resistance 0.1 ohm/cm. [...]
Shown in the figure below is a meter-bridge set up with null deflection in the galvanometer. The value of the unknown resistor R is
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Dec
Shown in the figure below is a meter-bridge set up with null deflection in the galvanometer. The value of the unknown resistor R is Shown in the figure below is a meter-bridge set up with null deflection in the galvanometer. The value of the unknown resistor R is December 1, 2020 Category: Cengage NEET by [...]
In a Wheatstone bridge, three resistances P, Q and R are connected in the three arms and the fourth arm is formed by two resistances S1 and S2 connected in parallel. The condition for the bridge to be balanced will be
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Dec
In a Wheatstone bridge, three resistances P, Q and R are connected in the three arms and the fourth arm is formed by two resistances S1 and S2 connected in parallel. The condition for the bridge to be balanced will be In a Wheatstone bridge Q and R are connected in the three arms [...]
Three resistance P,Q,R each of 2Ω and an unknown resistance S from the four arms of a Wheatstone’s bridge circuit. When a resistance of 6Ω is connected in parallel to S the bridge gets balanced. What is the value of S ?
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Dec
Three resistance P,Q,R each of 2Ω and an unknown resistance S from the four arms of a Wheatstone’s bridge circuit. When a resistance of 6Ω is connected in parallel to S the bridge gets balanced. What is the value of S ? -q R each of 2Ω and an unknown resistance S from the four [...]
Two batteries, one of emf 18V and internal resistance 2Ω and the other of emf 12 and internal resistance 1Ω , are connected as shown. The voltmeter V will record a reading of
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Dec
Two batteries, one of emf 18V and internal resistance 2Ω and the other of emf 12 and internal resistance 1Ω , are connected as shown. The voltmeter V will record a reading of are connected as shown.The voltmeter V will record a reading of one of emf 18V and internal resistance 2Ω and the other [...]
The reading of the ammeter as per figure shown is
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Dec
The reading of the ammeter as per figure shown is The reading of the ammeter as per figure shown is December 1, 2020 Category: Cengage NEET by C.P Singh , Chapter 3 - Current Electricity , Part 2 ,